the president faces a tax evasion probe. the city of boston has been holding a silent vigil and remembered -- in remembrance of the attack one week ago. >> public life team to a halt at 2:50 p.m., the exact time the attack took place. three people were killed and more than 180 were injured when two homemade bombs went off to the finish line of therace. authorities say they have charged the one surviving suspect. he is in the hospital with serious injuries. >> federal prosecutors say he will face charges of using a weapon of mass distraction and malicious distraction of property resulting in death. he could face the death penalty. >> the suspect was charged while still in his hospital bed. he is unable to speak due to a gunshot wound in the throat, but that he can respond to questions in writing. the 19-year-old could face the death penalty if found guilty. investigators continue to search for evidence at the scene of the shootout that ended in his arrest on friday night. police say they found at least two more explosive devi